1228 is an even 4-digits composite number following 1227
and preceding 1229 . In scientific notation, it is written as 1.228 × 10^3.
The sum of its digits is 13. It has a total of 3 prime factors and 6 positive divisors.
There are 612 positive integers (up to 1228) that are relatively prime to 1228.
1228 has 6 divisors, whose sum is 2156
The reverse of 1228 is 8221
Previous prime number is 2
Is Prime? no
Number parity even
Number length 4
Sum of Digits 13
Digital Root 4
Name
one thousand two hundred twenty-eight
Scientific notation
1.228 × 10^3
Engineering notation
1.228 × 10^3
Prime Factorization
2 × 2 × 307
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
614
Product of the distinct prime numbers
The prime factorization of 1228 is 2 × 2 × 307.
Since it has a total of 3 prime factors.
4 , 4 , 71 , 25 , 647 , 168 , 4530 , 7180 , 50938 , 25913 , 190242 , 180541 , 4255937 , 9897412 , 74643969 , 94201366 , 152455098 , 544707365 , 1519844612 , 3930885712
n×2
2456
n×3
3684
n×4
4912
n×5
6140
n÷2
614
n÷3
409.33333333333
n÷3
307
n÷5
245.6
n2
1507984
n3
1851804352
n4
2274015744256
n5
2792491333946368
2 √n
35.04283093587
3 √n
10.708602276735
4 √n
5.9196985510979
5 √n
4.1480088409493
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1227
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1228 can be divided by 6 positive divisors.
The sum of these divisors (counting 1228) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
10011001100
3
Ternary
1200111
4
Quaternary
103030
5
Quinary
14403
6
Senary
5404
8
Octal
2314
10
Decimal
1228
12
Duodecimal
864
16
Hexadecimal
4cc
20
Vigesimal
318
36
Base36
y4
md5
eb86d510361fc23b59f18c1bc9802cc6
sha1
2a94b50a655ce6b38f78ca33a4b95e39f0521b89
sha256
6dfb97632210ac38a071667cf8be7df83a16178e12f1248e45b2a3d24b3b2bd1
sha512
855fd713ef854202bc971163ef702899585c162030191fe5fa90fef04755ceb87bdb8591e15e9f874fa82143327463e7a20d078c4830ff7a45940d41d7e977e6
ripemd-160
c722fd2bc503c0900deb046e8833a8ca1f0e00ba
Diameter
2456
Circumference
7715.7515572165
Area
4737471.456131
Volume
7756819930.8384
Surface area
18949885.824524
Circumference
7715.7515572165
Perimeter
4912
Area
1507984
Diagonal
1736.6542545942
Surface area
9047904
Volume
1851804352
Space diagonal
2126.9583916946
Perimeter
3684
Area
652976.22625024
Altitude
1063.4791958473
Surface area
652976.22625024
Volume
218237235.78833
Height
578.88475153139